87651800 has 24 divisors (see below), whose sum is σ = 203790900. Its totient is φ = 35060640.

The previous prime is 87651799. The next prime is 87651803. The reversal of 87651800 is 815678.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87651803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218930 + ... + 219329.

Almost surely, 2^87651800 is an apocalyptic number.

It is an amenable number.

87651800 is an abundant number, since it is smaller than the sum of its proper divisors (116139100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87651800 is a wasteful number, since it uses less digits than its factorization.

87651800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438275 (or 438266 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 87651800 is about 9362.2540021087. The cubic root of 87651800 is about 444.2085836502.

The spelling of 87651800 in words is "eighty-seven million, six hundred fifty-one thousand, eight hundred".